Alright, let's work through 66451780 times 74025369 step by step
66451780 × 74025369 = 74025369 × (66451780)
+ 74025369 × 0 producing 0
+ 74025369 × 80 yielding 5922029520
+ 74025369 × 700 that results in 51817758300
+ 74025369 × 1000 giving us 74025369000
+ 74025369 × 50000 that results in 3701268450000
+ 74025369 × 400000 which equals 29610147600000
+ 74025369 × 6000000 that is equal 444152214000000
+ 74025369 × 60000000 producing 4441522140000000

= 4919117535206820
